Cleanup stack trace in error logs (#6045)

Add compile time GOROOT path to the list of prefix
of file paths to be removed.

Add webhandler function names to the slice that
stores function names to terminate logging.

cmd/build-constants.go

@@ -22,6 +22,9 @@ var (
 	// GOPATH - GOPATH value at the time of build.
 	GOPATH = ""
 
+	// GOROOT - GOROOT value at the time of build.
+	GOROOT = ""
+
 	// Go get development tag.
 	goGetTag = "DEVELOPMENT.GOGET"
 

cmd/gateway-main.go

@@ -34,7 +34,7 @@ import (
 )
 
 func init() {
-	logger.Init(GOPATH)
+	logger.Init(GOPATH, GOROOT)
 	logger.RegisterUIError(fmtError)
 }
 

cmd/logger/logger.go

@@ -52,6 +52,25 @@ var matchingFuncNames = [...]string{
 	"http.HandlerFunc.ServeHTTP",
 	"cmd.serverMain",
 	"cmd.StartGateway",
+	"cmd.(*webAPIHandlers).ListBuckets",
+	"cmd.(*webAPIHandlers).MakeBucket",
+	"cmd.(*webAPIHandlers).DeleteBucket",
+	"cmd.(*webAPIHandlers).ListObjects",
+	"cmd.(*webAPIHandlers).RemoveObject",
+	"cmd.(*webAPIHandlers).Login",
+	"cmd.(*webAPIHandlers).GenerateAuth",
+	"cmd.(*webAPIHandlers).SetAuth",
+	"cmd.(*webAPIHandlers).GetAuth",
+	"cmd.(*webAPIHandlers).CreateURLToken",
+	"cmd.(*webAPIHandlers).Upload",
+	"cmd.(*webAPIHandlers).Download",
+	"cmd.(*webAPIHandlers).DownloadZip",
+	"cmd.(*webAPIHandlers).GetBucketPolicy",
+	"cmd.(*webAPIHandlers).ListAllBucketPolicies",
+	"cmd.(*webAPIHandlers).SetBucketPolicy",
+	"cmd.(*webAPIHandlers).PresignedGet",
+	"cmd.(*webAPIHandlers).ServerInfo",
+	"cmd.(*webAPIHandlers).StorageInfo",
 	// add more here ..
 }
 
@@ -142,22 +161,24 @@ func RegisterUIError(f func(string, error, bool) string) {
 // and GOROOT directories. Also append github.com/minio/minio
 // This is done to clean up the filename, when stack trace is
 // displayed when an error happens.
-func Init(goPath string) {
+func Init(goPath string, goRoot string) {
 
 	var goPathList []string
+	var goRootList []string
 	var defaultgoPathList []string
+	var defaultgoRootList []string
+	pathSeperator := ":"
 	// Add all possible GOPATH paths into trimStrings
 	// Split GOPATH depending on the OS type
 	if runtime.GOOS == "windows" {
-		goPathList = strings.Split(goPath, ";")
-		defaultgoPathList = strings.Split(build.Default.GOPATH, ";")
-	} else {
-		// All other types of OSs
-		goPathList = strings.Split(goPath, ":")
-		defaultgoPathList = strings.Split(build.Default.GOPATH, ":")
-
+		pathSeperator = ";"
 	}
 
+	goPathList = strings.Split(goPath, pathSeperator)
+	goRootList = strings.Split(goRoot, pathSeperator)
+	defaultgoPathList = strings.Split(build.Default.GOPATH, pathSeperator)
+	defaultgoRootList = strings.Split(build.Default.GOROOT, pathSeperator)
+
 	// Add trim string "{GOROOT}/src/" into trimStrings
 	trimStrings = []string{filepath.Join(runtime.GOROOT(), "src") + string(filepath.Separator)}
 
@@ -167,10 +188,21 @@ func Init(goPath string) {
 		trimStrings = append(trimStrings, filepath.Join(goPathString, "src")+string(filepath.Separator))
 	}
 
+	for _, goRootString := range goRootList {
+		trimStrings = append(trimStrings, filepath.Join(goRootString, "src")+string(filepath.Separator))
+	}
+
 	for _, defaultgoPathString := range defaultgoPathList {
 		trimStrings = append(trimStrings, filepath.Join(defaultgoPathString, "src")+string(filepath.Separator))
 	}
 
+	for _, defaultgoRootString := range defaultgoRootList {
+		trimStrings = append(trimStrings, filepath.Join(defaultgoRootString, "src")+string(filepath.Separator))
+	}
+
+	// Remove duplicate entries.
+	trimStrings = uniqueEntries(trimStrings)
+
 	// Add "github.com/minio/minio" as the last to cover
 	// paths like "{GOROOT}/src/github.com/minio/minio"
 	// and "{GOPATH}/src/github.com/minio/minio"
@@ -200,7 +232,7 @@ func getTrace(traceLevel int) []string {
 	var trace []string
 	pc, file, lineNumber, ok := runtime.Caller(traceLevel)
 
-	for ok {
+	for ok && file != "" {
 		// Clean up the common prefixes
 		file = trimTrace(file)
 		// Get the function name

cmd/logger/utils.go

@@ -50,3 +50,16 @@ func ansiSaveAttributes() {
 func ansiRestoreAttributes() {
 	ansiEscape("8")
 }
+
+func uniqueEntries(paths []string) []string {
+	found := map[string]bool{}
+	unqiue := []string{}
+
+	for v := range paths {
+		if _, ok := found[paths[v]]; !ok {
+			found[paths[v]] = true
+			unqiue = append(unqiue, paths[v])
+		}
+	}
+	return unqiue
+}

cmd/server-main.go

@@ -33,7 +33,7 @@ import (
 )
 
 func init() {
-	logger.Init(GOPATH)
+	logger.Init(GOPATH, GOROOT)
 	logger.RegisterUIError(fmtError)
 }